Quick Verdict
A powerful flagship CPU that brings 3nm efficiency and high clocks to the desktop, though it requires robust cooling for maximum performance.
Overview
Launch
Oct 24th, 2024
Status
ActiveGeneration
Ultra 9 (Arrow Lake)
Market
Desktop
The Intel Core Ultra 9 285K is the flagship unlocked Arrow Lake-S desktop processor, featuring 24 cores, 5.7 GHz boost, and a 125W TDP.
The Intel Core Ultra 9 285K is the flagship desktop processor of the Arrow Lake-S generation, launched in October 2024. It features a robust 24-core configuration without Hyper-Threading, utilizing 8 Lion Cove P-cores and 16 Skymont E-cores to deliver 24 total threads. Manufactured on TSMC's 3nm process, this chip represents a major architectural leap for Intel.
It operates at a high base frequency of 3.7 GHz and boosts up to 5.7 GHz, providing exceptional single-threaded and gaming performance.
The processor includes 36 MB of L3 cache and integrates Arc Xe-LPG graphics with 64 EUs. Designed for the LGA 1851 socket, it supports DDR5-6400 memory and offers 20 PCIe 5.0 lanes.
With a base TDP of 125W and a maximum turbo power of 250W, the unlocked 285K is built for enthusiasts. Priced at $589, it targets gamers, content creators, and power users looking for cutting-edge technology and aggressive multi-core performance on Intel's newest platform.
Specifications
Performance
24 cores crush heavy multi-threaded workloads like rendering.
Excellent for complex virtualization and containerization.
Top-tier gaming performance, easily pushing high refresh rates.
Efficient at idle, but can draw up to 250W under full load.
- •High single-core boost ensures maximum FPS
- •Performs exceptionally well in CPU-bound scenarios
- •Requires a high-end GPU to avoid bottlenecks
- •13 TOPS NPU handles background AI tasks
- •Total 36 TOPS combined with CPU and GPU
- •Suitable for light local AI inference
Architecture
3 nm (TSMC)
Process Node
Arrow Lake-S
Codename
24C / 24T
Core Config
36 MB
L3 Cache
125 W
TDP
Architecture Overview
Arrow Lake-S marks a paradigm shift for Intel, utilizing a disaggregated tile architecture entirely manufactured by TSMC. The Core Ultra 9 285K's compute tile uses the N3B 3nm node, featuring 8 Lion Cove P-cores optimized for instructions-per-clock (IPC) and 16 Skymont E-cores for parallel efficiency.
CPU Design
Hyper-Threading is removed, relying purely on physical cores to avoid security vulnerabilities and scheduling complexities. The processor integrates a dedicated NPU delivering 13 TOPS, enabling AI-accelerated background tasks.
Memory Subsystem
Memory support includes dual-channel DDR5 up to 6400 MT/s. The memory controller is highly optimized, providing low latency and high bandwidth for demanding applications.
PCIe & I/O
For connectivity, it provides 20 PCIe 5.0 lanes, enabling high-speed storage and GPU configurations. The platform chipset also provides additional PCIe 4.0 lanes.
Overclocking
The unlocked multiplier allows enthusiasts to push frequencies beyond stock limits. With a default 125W power draw that can scale up to 250W under load, the architecture balances high-frequency bursts with advanced power management.
- New LGA 1851 socket
- Integrated NPU for AI workloads
- Removal of Hyper-Threading for efficiency
Key Highlights
- Unlocked for enthusiast overclocking
- Excellent single-core and multi-core performance
- Modern LGA 1851 platform with PCIe 5.0
- Integrated NPU for AI acceleration
- High 5.7 GHz boost clock
- High power consumption under load (up to 250W)
- Requires expensive LGA 1851 motherboard
- Removal of Hyper-Threading reduces thread count vs predecessors
- Minimal IPC gain over Raptor Lake
History
The Core Ultra 9 285K was officially launched on October 24, 2024, marking the debut of Intel's Arrow Lake architecture on the desktop platform. This release was highly anticipated as it replaced the long-standing LGA 1700 socket with the new LGA 1851. The 285K succeeded the Core i9-14900K, introducing the Core Ultra branding to desktops.
The launch was significant because it abandoned Hyper-Threading—a technology Intel had used for over a decade—in favor of a straightforward physical core count. By leveraging TSMC's 3nm process for the compute tile, Intel aimed to improve power efficiency and IPC over the 14th Gen Raptor Lake Refresh. The 285K also introduced an NPU to the desktop space, aligning with the industry's push toward AI-PC standards.
Despite facing stiff competition from AMD's Ryzen 9000 series, the 285K stood out for its high clock speeds, modern chipset features, and robust single-threaded performance, cementing Intel's position in the high-end market.
Improvements over Previous Generation
- New LGA 1851 socket
- Integrated NPU for AI workloads
- Removal of Hyper-Threading for efficiency
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Building a brand new, no-compromise high-end gaming or creator PC.
Avoid if…
- You are upgrading from a 13th or 14th Gen Intel CPU.
- You do not plan to overclock.
- You have a tight budget for cooling components.
Use Cases
Interesting Facts
This is the first Intel desktop processor to use TSMC's 3nm process for the compute tile.
It is the first flagship Intel desktop CPU since the Core i7-7700K to not feature Hyper-Threading.
The 285K uses a completely new socket (LGA 1851), ending the LGA 1700 era.
It includes an NPU, making it Intel's first desktop chip dedicated to local AI processing.
People Also Ask
Is the Core Ultra 9 285K good for gaming?
Yes, it is excellent for gaming, offering up to 5.7 GHz boost speeds.
Does the Core Ultra 9 285K have Hyper-Threading?
No, Intel removed Hyper-Threading in Arrow Lake; it has 24 physical cores and 24 threads.
What socket does the Core Ultra 9 285K use?
It uses the new Intel LGA 1851 socket.
How much power does the 285K use?
It has a base TDP of 125W but can consume up to 250W under maximum turbo load.
Is the 285K unlocked?
Yes, it features an unlocked multiplier for overclocking.
What memory does the Core Ultra 9 285K support?
It supports dual-channel DDR5 memory up to 6400 MT/s natively.
Does the 285K have an NPU?
Yes, it integrates a 13 TOPS NPU for AI workloads.
Can I use DDR4 with the Core Ultra 9 285K?
No, Arrow Lake exclusively supports DDR5 memory.
What is the boost clock of the Core Ultra 9 285K?
The maximum turbo boost clock is 5.7 GHz.
Is it worth upgrading to 285K from 14900K?
Generally no, as the IPC gains are minimal and it requires a new motherboard.
Frequently Asked Questions
Does the Core Ultra 9 285K come with a cooler?
No, you must purchase an aftermarket cooling solution.
What is the L3 cache size of the 285K?
It has 36 MB of shared L3 cache.
What integrated graphics are in the 285K?
It features Intel Arc Xe-LPG Graphics with 64 Execution Units.
What PCIe version does the 285K support?
It supports PCIe 5.0 with 20 lanes directly from the CPU.
When was the Core Ultra 9 285K released?
It was released on October 24th, 2024.
What is the launch price of the 285K?
The launch price is $589 USD.
Does the 285K support AVX-512?
No, it supports AVX2 and AVX-VNNI, but not AVX-512.
What is the base clock of the 285K?
The base clock is 3.7 GHz.
What chipsets support the 285K?
It is supported by Z890, B860, W880, Q870, and H810 chipsets.
How many E-cores does the 285K have?
It has 16 Skymont E-cores.